Knocking is a phenomenon characterized by undesirable vibration and noise and can cause engine damage. Knock Sensor (KS) is installed on the cylinder block and senses engine knocking.

When knocking occurs, the vibration from the cylinder block is applied as pressure to the piezoelectric element. When a knock occurs, the sensor produces voltage signal. The ECM retards the ignition timing when knocking occurs. If the knocking disappears after retarding the ignition timing, the ECM will advance the ignition timing. This sequential control can improve engine power, torque and fuel economy.

Camshaft Position Sensor (CMPS). Repair procedures

Inspection 1. Check the signal waveform of the CMPS and CKPS using the GDS. Specification: Refer to “Wave Form” ...

Knock Sensor (KS). Specifications

Specification Item Specification Capacitance (pF) 850 ~ 1,150 ...

See also:

Preparation Of Tools And Measuring Equipment
Be sure that all necessary tools and measuring equipment are available starting work. Special Tools Use special tools when they are required. Removal Of Parts First find th ...

Smart key unit. Repair procedures
Inspection Smart Key Unit - Refer to the BE group - inspection / self diagnosis with GDS. Smart Key Switch - Refer to the BE group - inspecti ...

Manifold Absolute Pressure Sensor (MAPS). Repair procedures
Inspection 1. Connect the GDS on the Data Link Connector (DLC). 2. Measure the output voltage of the MAPS at idle and IG ON. ...